ATP phosphoribosyltransferase

In enzymology, an ATP phosphoribosyltransferase (EC2.4.2.17) is an enzyme that catalyzes the chemical reaction

Thus, the two substrates of this enzyme are 1-(5-phospho-D-ribosyl)-ATP and diphosphate, whereas its two products are ATP and 5-phospho-alpha-D-ribose 1-diphosphate.